Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D239/00—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
  • C07D239/02—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
  • C07D239/24—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
  • C07D239/28—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
  • C07D239/46—Two or more oxygen, sulphur or nitrogen atoms
  • C07D239/60—Three or more oxygen or sulfur atoms
  • C07D239/66—Thiobarbituric acids

Definitions

• the present invention relates to and has for its objects the provision of particular new 2-amidocarbonylthiobarbituric acids, which possess insecticidal, acaricidal, fungicidal and bactericidal properties, active compositions in the form of mixtures of such compounds with solid and liquid dispersible carrier vehicles, and methods for producing such compounds and for using such compounds in a new way especially for combating pests, e.g. insects, acarids, fungi, and bacteria with other and further objects becoming apparent from a study of the within specification and accompanying examples.
• pests e.g. insects, acarids, fungi, and bacteria
• thiobarbituric acid derivatives such as 5-acetyl-3,3-dimethyl-2-thiobarbituric acid (Compound A) have insecticidal, acaricidal, fungicidal and herbicidal properties. However, their activity is not always entirely satisfactory, especially if low amounts and low concentrations are used.
• the present invention provides 2-amidocarbonylthiobarbituric acid derivatives, per se or as salts, of the general formula ##SPC2##
• R 1 is alkyl, alkoxyalkyl, alkylthioalkyl, haloalkyl, cycloalkylalkyl, alkenyl, cycloalkyl, cycloalkenyl, haloalkenyl, alkylthiocarbonyl or alkoxycarbonyl, or optionally substituted aryl or aralkyl,
• R 2 and R 3 each independently is alkyl, alkenyl, cycloalkyl, aryl, aralkyl or hydrogen, provided that not more than one of R 2 and R 3 is hydrogen, and
• X is oxygen or sulfur.
• the compounds can exist in the form shown or as the tautomer, in accordance with the equation ##SPC3##
• R 1 preferably represents straight-chain or branched alkyl with 1 to 12 (especially 1 to 6) carbon atoms; alkoxyalkyl or haloalkyl with 1 to 12 (especially 1 to 6) carbon atoms in the alkyl moiety and 1 to 3 carbon atoms in the alkoxy moiety or 1 to 3 halogen atoms (especially chlorine); alkylthioalkyl with 1 to 6 carbon atoms in the alkyl moiety and 1 to 3 carbon atoms in the alkylthio moiety; alkenyl or haloalkenyl with 2 to 6 carbon atoms and, where relevant, 1 to 3 halogen atoms; optionally methyl-substituted cycloalkyl, cycloalkylalkyl or cycloalkenyl with 5 or 6 (especially 6) carbon atoms in the cycloalkyl or cycloalkenyl radical; optionally substituted aryl or aralkyl with 6 to 10 carbon atoms
• Preferred possible substituents, of which one or more may be present, of R 1 when it is aryl or aralkyl include halogen (especially fluorine, chlorine or bromine), haloalkyl or haloalkoxy with 1 or 2 carbon atoms and 2 to 5 halogen atoms (especially chlorine and/or fluorine), straight-chain or branched alkyl with 1 to 4 carbon atoms, alkoxy or alkylthio with 1 to 4 carbon atoms, alkylsulfonyl with 1 to 4 carbon atoms and/or the nitro group.
• halogen especially fluorine, chlorine or bromine
• haloalkyl or haloalkoxy with 1 or 2 carbon atoms and 2 to 5 halogen atoms especially chlorine and/or fluorine
• straight-chain or branched alkyl with 1 to 4 carbon atoms straight-chain or branched alkyl with 1 to 4 carbon atoms
• alkoxy or alkylthio with
• R 2 preferably represents straight-chain or branched alkyl with 1 to 6 (especially 1 to 4) carbon atoms, alkenyl with 2 to 6 (especially 2 or 3) carbon atoms, cycloalkyl with 5 to 6 atoms (especially cyclohexyl), or phenyl; while R 3 preferably represents straight-chain or branched alkyl with 1 to 6 (especially 1 to 4) carbon atoms, alkenyl with 2 or 3 carbon atoms, cycloalkyl with 5 or 6 carbon atoms (especially cyclohexyl), phenyl, benzyl or hydrogen.
• amidocarbonylthiobarbituric acid derivatives and salts thereof according to the invention display a substantially greater insecticidal, acaricidal and fungicidal action than the thioburbituric acid derivatives, such as, for example, 5-acetyl-1,3-dimethyl-2-thiobarbituric acid, which are known in the art. They thus represent a genuine enrichment of the art.
• the invention also provides a process for the production of a compound of the invention in which a thiobarbituric acid of the general formula ##SPC4##
• R 2 and R 3 have the abovementioned meanings, is reacted with an isocyanate or isothiocyanate of the general formula
• R 1 and X have the abovementioned meanings, optionally in the presence of an acid acceptor and/or a solvent and optionally at a temperature of 10° to 150°C.
• Thiobarbituric acids of the formula II are already known. As examples there may be mentioned: 1,3-dimethyl-2-thiobarbituric acid, 1-methyl-2-thiobarbituric acid, 3-ethyl-1-methyl-2-thiobarbituric acid, 3-isopropyl-1-methyl-2-thiobarbituric acid, 1-methyl-3-propyl-2-thiobarbituric acid, 3-butyl-1-methyl-2-thiobarbituric acid, 3-i-butyl-1-methyl-2-thiobarbituric acid, 3-s-butyl-1-methyl-2-thiobarbituric acid, 3-t-butyl-1-methyl-2-thiobarbituric acid, 1,3-dicyclohexyl-2-thiobarbituric acid, 1,3-diphenyl-2-thiobarbituric acid, 3-benzyl-1-methyl-2-thiobarbituric acid and 3-allyl-1-methyl-2-thiobarbituric acid.
• Isocyanates or isothiocyanates of formula III are already known and can be prepared according to customary methods by reacting about one mol of the corresponding amine with about one mole of phosgene or thiophosgene preferably in the presence of an inert organic solvent at elevated temperatures as described in Houben Weyl Methoden der organischen Chemie Vol. VIII (1952).
• the isothtiocyanates can be prepared according to customary methods by reacting the corresponding thioureas with acids.
• amidocarbonylthiobarbituric acids according to the invention can be employed in the form of salts with physiologically tolerated bases, for example, triethylamine salts, ammonium salts, sodium salts and potassium salts.
• the solvent which may be used in the process according to the invention may for example by any inert organic solvent.
• Preferred examples include hydrocarbons such as ligroin, petroleum ether, benzene, toluene and xylene, chlorinated hydrocarbons such as chloroform, carbon tetrachloride, ethylene chloride or methylene chloride, or ketones such as acetone and methyl ethyl ketone, and ethers, such as diethyl ether, diisopropyl ether, diisobutyl ether, dibutyl ether, tetrahydrofuran and dioxane.
• hydrocarbons such as ligroin, petroleum ether, benzene, toluene and xylene
• chlorinated hydrocarbons such as chloroform, carbon tetrachloride, ethylene chloride or methylene chloride, or ketones such as acetone and methyl ethyl ketone
• any of the usual acid-binding agents can be used as the acid acceptor.
• Alkali metal hydroxides, alkaline earth metal hydroxides, alkali metal carbonates, alkaline earth metal carbonates and organic bases may be mentioned as preferred examples.
• Tertiary organic bases for example triethylamine, pyridine, dimethylcyclohexylamine and dimethylbenzylamine, and inorganic acid-binding agents, for example sodium bicarbonate and potassium bicarbonate, are particularly suitable.
• reaction temperatures can be varied within a wide range. In general, the reaction is carried out at 10° to 150°C, preferably 20° to 100°C. It is generally carried out under normal pressure.
• the solvent may be distilled off, the residue taken up in water, the solution acidified and the undissolved matter filtered off. The filtrate may be discarded. The residue may be washed well with alcohol, dried and optionally purified by recrystallization.
• the active compounds according to the invention are distinguished by an excellent insecticidal and acaricidal activity against plant pests and hygiene pests. They have a good action against sucking insects and also against biting insects and mites (Acarina). For this reason, the compounds according to the invention are employed successfully as pesticides in plant protection.
• aphids such as the green peach aphid (Myzus persicae), the bean aphid ( lateralalis fabae), the bird cherry aphid (Rhopalosiphum padi), the pea aphid (Macrosiphum pisi) and the potato aphid (Macrosiphum solanifolii), the currant gall aphid (Cryptomyzus korschelti), the rosy apple aphid (Sappaphis mali), the mealy plum aphid (Hyalopterus arundinis) and the cherry black-fly (Myzus cerasi); in addition, scales and mealybugs (Coccina), for example the oleander scale (Aspidiotus hederae) and the soft scale (Lecanium hesperidum) as well as the grape mealybug (Pseudococcus maritim
• butterfly caterpillars such as the diamond-back moth (Plutella maculipennis), the gypsy moth (Lymantria dispar), the brown-tail moth (Euproctis cryssorrhoea) and tent caterpillar (Malacosoma neustria); further, the cabbage moth (Mamestra brassicae) and the cutworm (Agrotis segetum), the large white butterfly (Pieris brassicae), the small winter moth (Cheimatobia brumata), the green oak tortrix moth (Tortrix viridana), the fall armyworm (Laphygma frugiperda) and cotton worm (Prodenia litura), the ermine moth (Hyponomeuta padella), the Mediterranean flour moth (Ephestia kuhniella) and greater wax moth (Galleria mellonella).
• beetles Colding insects
• the Colordao beetle Lieptinotarsa decemlineata
• the dock beetle Gastrophysa viridula
• the mustard beetle Phaedon cochleariae
• the blossom beetle Meligethes aeneus
• the raspberry beetle Byturus tomentosus
• the leather beetle Demestesluii
• the khapra beetle Trogoderma granarium
• the flour beetle Tribolium castaneum
• the northern corn billbug Calandra or Sitophilus zeamais
• the drugstore beetle Stepgobium paniceum
• cockroaches such as the German cockroach (Blattella germanica), American cockroach (Periplaneta americana), Madeira cockroach (Leucophaea or Rhyparobia maderae), oriental cockroach (Blatta orientalis), the giant cockroach (Blaberus giganteus) and the black giant cockroacch (Blaberus fuscus) as well as Henschoutedenia flexivitta; further, Orthtoptera, for example the house cricket (Gryrllus domesticus); termites such as the eastern subterranean termite (Reticulitermes flavipes) and Hymenoptera such as ants, for example the graden ant (Lasius niger).
• the Diptera comprise essentially the flies, such as the vinegar fly (Drosophila melanogaster), the Mediterranean fruit fly (Ceratitis capitata), the house fly (Musca domestica), the little house fly (Fannia canicularis), the black blow fly (Phormia regina) and bluebottle fly (Calliphora erythrocephala) as well as the stable fly (Stomoxys calcitrans); further, gnats, for example mosquitoes such as the yellow fever mosquito (Aedes aegypti), the northern hous mosquito (Culex pipiens) and the malaria mosquito (Anopheles stephensi).
• mosquitoes such as the yellow fever mosquito (Aedes aegypti), the northern hous mosquito (Culex pipiens) and the malaria mosquito (Anopheles stephensi).
• gall mites for example the blackcurrant gall mite (Eriophyes ribis)
• tarsonemids for example
• the active compounds according to the invention furthermore display strong fungitoxic and bacteriotoxic action. They do not harm crop plants in the concentrations required to combat fungi and bacteria, and have a low toxicity to warm-blooded animals. For these reasons, they are suitable for use as plant protection agents for combating fungi and bacteria. Fungitoxic agents are employed in plant protection for combating Archimycetes, Phycomycetes, Ascomycetes, Basidiomycetes and Fungi Imperfecti.
• the compounds according to the invention are active against fungi and bacteria which attack various crop plants, for example species of Pythium, species of Phytophthora, species of Fusarium, Verticillium alboatrum, Phialophora cinerescens, Sclerotinia sclerotiorum, species of Botrytis, Cochliobolus miyabeanus, Mycosphaerella musicola, Cercospora personata, Helminthosporium gramineum, species of Alternaria, species of Colletotrichum, Venturia inaequalis, species of Rhizoctonia, Thielaviopsis basicola and the bacterium Xanthomonas oryzae.
• the compounds according to the invention are also active against diseases of cereals, for example Puccinia recondita, Erysiphe graminis and Tilletia caries.
• the active compounds according to the invention display a very good molluscicidal activity.
• the active compounds according to the invention also have a very good activity against animal ectoparasites, such as ticks, as well as against endoparasites.
• the active compounds according to the instant invention can be utilized, if desired, in the form of the usual formulations or compositions with conventional inert (i.e. plant compatible or herbicidally inert) pesticide diluents or extenders, i.e., diluents, carriers or extenders of the type usable in conventional pesticide formulations or compositions, e.g. conventional pesticide dispersible carrier vehicles such as gases, solutions, emulsions, suspensions, emulsifiable concentrates, spray powders, pastes, soluble powders, dusting agents, granules, etc.
• conventional inert i.e. plant compatible or herbicidally inert
• pesticide diluents or extenders i.e., diluents, carriers or extenders of the type usable in conventional pesticide formulations or compositions
• conventional pesticide dispersible carrier vehicles such as gases, solutions, emulsions, suspensions, emulsifiable concentrates,
• carrier vehicle assistants e.g., conventional pesticide surface-active agents, including emulsifying agents and/or dispersing agents, whereby, for example, in the case where water is used as diluent, organic solvents may be added as auxiliary solvents.
• aerosol propellants which are gaseous at normal temperatures and pressures, such as freon
• inert dispersible liquid diluent carriers including inert organic solvents, such as aromatic hydrocarbons (e.g.
• amides e.g. dimethyl formamide, etc.
• sulfoxides e.g. dimethyl sulfoxide, etc.
• acetonitrile ketones (e.g. acetone, methyl ethyl ketone methyl isobutyl ketone, cyclohexanone, etc.), and/or water; as well as inert dispersible finely divided solid carriers, such as ground natural minerals (e.g. kaolins, clays, alumina, silica, chalk, i.e. calcium carbonate, talc, attapulgite, montmorillonite, kieselguhur, etc.) and ground synthetic minerals (e.g.
• ground natural minerals e.g. kaolins, clays, alumina, silica, chalk, i.e. calcium carbonate, talc, attapulgite, montmorillonite, kieselguhur, etc.
• ground synthetic minerals e.g.
• emulsifying agents such as non-ionic and/or anionic emulsifying agents (e.g.
• polyethylene oxide esters of fatty acids polyethylene oxide ethers of fatty alcohols, alkyl sulfates, alkyl sulfonates aryl sulfonates, albumin hydrolyzates, etc., and especially alkyl arylpolyglycol ethers, magnesium stearate, sodium oleate, etc.); and/or dispersing agents, such as lignin, sulfite waste liquors, methyl cellulose, etc.
• Such active compounds may be employed alone or in the form of mixtures with one another and/or with such solid and/or liquid dispersible carrier vehicles and/or with other known compatible active agents, especially plant protection agents, such as other insecticides, acaricides, fungicides, bactericides and molluscicides, or nematocides, rodenticides, herbicides, fertilizers, growth-regulating agents, etc., if desired, or in the form of particular dosage preparations for specific application made therefrom, such as solutions, emulsions, suspensions, powders, pastes, and granules which are thus ready for use.
• plant protection agents such as other insecticides, acaricides, fungicides, bactericides and molluscicides, or nematocides, rodenticides, herbicides, fertilizers, growth-regulating agents, etc.
• composition mixtures in which the active compound is present in an amount substantially between about 0.1-95% by weight, and preferably 0.5-90% by weight, of the mixture
• carrier composition mixtures suitable for direct application or field application generally contemplate those in which the active compound is present in an amount substantially between about 0.0001-10%, preferably 0.01-1%, by weight of the mixture.
• the present invention contemplates over-all compositions which comprise mixtures of a conventional dispersible carrier vehicle such as (1) a dispersible inert finely divided carrier solid, and/or (2) a dispersible carrier liquid such as an inert organic solvent and/or water preferably including a surface-active effective amount of a carrier vehicle assistant, e.g.
• a surface-active agent such as an emulsifying agent and/or a dispersing agent, and an amount of the active compound which is effective for the purpose in question and which is generally between about 0.0001-95%, and preferably 0.01-95%, by weight of the mixture.
• the active compounds can also be used in accordance with the well known ultra-low-volume process with good success, i.e. by applying such compound if normally a liquid, or by applying a liquid composition containing the same, via very effective atomizing equipment, in finely divided form, e.g. average particle diameter of from 50-100 microns, or even less, i.e. mist form, for example by airplane crop spraying techniques. Only up to at most about a few liters/hectare are needed, and often amounts only up to about 15 to 1000 g/hectare, preferably 40 to 600 g/hectare, are sufficient. In this process it is possible to use highly concentrated liquid compositions with said liquid carrier vehicles containing from about 20 to about 95% by weight of the active compound or even the 100% active substance alone, e.g. about 20-100% by weight of the active compound.
• the present invention contemplates methods of selectively killing, combating or controlling pests, e.g. insects, acarids, fungi and bacteria which comprises applying to at least one of correspondingly (a) such insects, (b) such acarids, (c) such fungi, (d) such bacteria, and (e) the corresponding habitat thereof, i.e. the locus to be protected, e.g. to a growing crop, to an area where a crop is to be grown or to a domestic animal, a correspondingly combative or toxic amount, i.e.
• pests e.g. insects, acarids, fungi and bacteria which comprises applying to at least one of correspondingly (a) such insects, (b) such acarids, (c) such fungi, (d) such bacteria, and (e) the corresponding habitat thereof, i.e. the locus to be protected, e.g. to a growing crop, to an area where a crop is to be grown or to
• the instant formulations or compositions are applied in the usual manner, for instance by spraying, atomizing, vaporizing, scattering, dusting, watering, squirting, sprinkling, pouring, fumigating, dressing, encrusting, and the like.
• Emuslifier 1 part by weight of alkylarly polyglycol ether
• Cabbage plants (Brassica oleracea) were sprayed with the preparation of the active compound until dripping wet and were then infested with mustard beetle larvae (Phaedon cochleariae).
• the degree of destruction was determined in %: 100% means that all beetle larvae were killed whereas 0% means that none of the beetle larvae were killed.
• the active compounds, the concentrations of the active compounds, the evaluation times and the results can be seen from Table 2.
• Emulsifier 1 part by weight of alkylarly polyglycol ether
• Bean plants (Phaseolus vulgaris), which had a height of approximately 10 - 30 cm, were sprayed with the preparation of the active compound until dripping wet. These bean plants were heavily infested with the common or twospotted spider mite (Tetranychus urticae) in all stages of development.
• the effectiveness of the preparation of active compound was determined by counting the dead mites.
• the degree of destruction thus obtained is expressed as a percentage: 100% means that all the spider mites were killed whereas 0% means that none of the spider mites were killed.
• composition of solvent mixture :
• alkylarly polyglycol ether emulsifier 0.01 part by weight of alkylarly polyglycol ether emulsifier
• the amount of active compound required for the desired concentration of active compound in the nutrient medium was mixed with the stated amount of the solvent mixture.
• the concentrate was thoroughly mixed, in the stated proportion, with the liquid nutrient medium which had been cooled to 42°C, and was poured into Petri dishes of 9 cm diameter. Control plates to which the preparation had not been added were also set up.
• the plates were inoculated with the species of pest stated in the table and incubated at about 21°C.

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• Agricultural Chemicals And Associated Chemicals (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

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Citations (2)

• 1974
  • 1974-02-07 DE DE2405733A patent/DE2405733C2/de not_active Expired
• 1975
  • 1975-02-01 EG EG43/75A patent/EG11930A/xx active
  • 1975-02-04 BE BE153028A patent/BE825150A/xx not_active IP Right Cessation
  • 1975-02-04 IL IL7546560A patent/IL46560A0/xx unknown
  • 1975-02-05 LU LU71798A patent/LU71798A1/xx unknown
  • 1975-02-05 SU SU7502102624A patent/SU578826A3/ru active
  • 1975-02-05 US US05/547,421 patent/US3961061A/en not_active Expired - Lifetime
  • 1975-02-05 IT IT19966/75A patent/IT1046799B/it active
  • 1975-02-05 DD DD184020A patent/DD118787A5/xx unknown
  • 1975-02-05 RO RO7581350A patent/RO72872A/ro unknown
  • 1975-02-05 JP JP50014467A patent/JPS6012322B2/ja not_active Expired
  • 1975-02-05 JP JP50014466A patent/JPS6028824B2/ja not_active Expired
  • 1975-02-05 CH CH137075A patent/CH569721A5/xx not_active IP Right Cessation
  • 1975-02-06 IE IE241/75A patent/IE40586B1/xx unknown
  • 1975-02-06 ZA ZA00750776A patent/ZA75776B/xx unknown
  • 1975-02-06 TR TR18425A patent/TR18425A/xx unknown
  • 1975-02-06 DK DK41675A patent/DK137126C/da not_active IP Right Cessation
  • 1975-02-06 PL PL1975177829A patent/PL99856B1/pl unknown
  • 1975-02-06 NL NLAANVRAGE7501429,A patent/NL180214C/xx not_active IP Right Cessation
  • 1975-02-06 CA CA219,504A patent/CA1034128A/en not_active Expired
  • 1975-02-06 BR BR763/75A patent/BR7500763A/pt unknown
  • 1975-02-06 GB GB508475A patent/GB1454471A/en not_active Expired
  • 1975-02-07 FR FR7503892A patent/FR2260578B1/fr not_active Expired
  • 1975-02-07 HU HU75BA00003200A patent/HU171226B/hu unknown
  • 1975-02-07 AT AT95275*#A patent/AT334689B/de not_active IP Right Cessation

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